protocols Flashcards

1
Q

HTTP/S

A

used for client and server to and recieve requests and deliver HTML web pages.
secure adds on encryption and authentification

Hypertext Transfer Protocol/secure

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2
Q

TCP/IP

A

TCP provides error free transmision between routers
IP routes packets across WAN

Transmission Control Protocol / Internet Protocol

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3
Q

UDP

A

used to send short messages using datagrams where speed is more important than accuracy

user datagram protocol

conntection ideal for online gaming

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4
Q

FTP

A

used for sending files between computers, normally on WAN

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5
Q

SMTP

A

transfers outgoing mail between servers and from email clients to servers

simple mail transsfer protocol

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6
Q

POP

A

retrieves emails from a mail server and transfers them to your device, removing them from the server in the process

post office protocol

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7
Q

IMAP

A

keeps emails on the mail server maintaining syncronicity between devices

internet message access protocol

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8
Q

What is a network?

A

Two or more computers connected together that transmit data

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9
Q

What are protocols?

A

Sets of rules defining how two devices communicate with each other

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10
Q

Why are protocols standard?

A

Protocols are standard so devices from different manufacturers don’t have problems communicating

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11
Q

Describe the structure of the Internet

A

The Internet is a global network of interconnected networks

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12
Q

What is the function of the application layer during data transmission?

A

The Application Layer specifies what protocols need to be used to relate the application to what it’s being used for.

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13
Q

What is the role of the transport layer during data transmission?

A

Establishes an end-to-end connection between the source and recipient computers. It also splits up the data into packets.

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14
Q

What is the role of the network layer during data transmission?

A

Adds the source and destination IP address.

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15
Q

What does the application layer do when it receives data?

A

Presents data in the form it was sent

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16
Q

What does the transport layer do when it receives the data?

A

Removes the port number and reassembles the packets.

17
Q

What does the network layer do when it receives the data?

A

Removes the IP address

18
Q

What does the link layer do when it receives the data?

A

Removes the MAC addresses

19
Q

What is a Local Area Network?

A

A network spread over a small geographical area/ positioned on a single site

20
Q

What is a wide area network?

A

A network spread over a large geographical area, usually requiring extra hardware.

21
Q

What does DNS stand for?

A

Domain Name System

22
Q

What is DNS?

A

The name given to the method of naming internet resources. (.com, .uk etc)

23
Q

What is circuit switching?

A

The process of creating a direct link between two devices and transferring data the entire duration of the link.

24
Q

What is a requirement of circuit switching?

A

The transfer and download rates must be identical on both devices.

25
Q

What is packet switching?

A

A method of communicating packets of data across a network

26
Q

Give an advantage of packet switching

A
  • Multiple methods to ensure data arrives correctly,
  • Multiple methods to arrive to destination, if one breaks you
    can always go through another route.
  • Transfer packets over a very large network
27
Q

Give a disadvantage of packet switching

A
  • Time is spent deconstructing and reconstructing the packets
28
Q

Give an advantage of circuit switching

A
  • Data arrives in logical order which results in a quicker reconstruction of data,
  • Enables two users to hold a call without any delay in speech.